How severe is CVE-2025-66378?

CVE-2025-66378 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-66378 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66378?

CVE-2025-66378 affects Pexip Pexip Infinity. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66378?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-66378 have an EU (EUVD) identifier?

Yes. CVE-2025-66378 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205374.

When was CVE-2025-66378 published?

CVE-2025-66378 was published on 2025-12-25 and last updated on 2026-06-17.

CVE-2025-66378

CVE-2025-66378 is a medium-severity vulnerability in Pexip Pexip Infinity with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-205374
Weakness: CWE-863
Affected product: Pexip Pexip Infinity
Published: 2025-12-25
Last modified: 2026-06-17

Description

Pexip Infinity 38.0 and 38.1 before 39.0 has insufficient access control in the RTMP implementation, allowing an attacker to disconnect RTMP streams traversing a Proxy Node.

Frequently asked questions

What is CVE-2025-66378?: Pexip Infinity 38.0 and 38.1 before 39.0 has insufficient access control in the RTMP implementation, allowing an attacker to disconnect RTMP streams traversing a Proxy Node.
How severe is CVE-2025-66378?: CVE-2025-66378 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-66378 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66378?: CVE-2025-66378 affects Pexip Pexip Infinity. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66378?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-66378 have an EU (EUVD) identifier?: Yes. CVE-2025-66378 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205374.
When was CVE-2025-66378 published?: CVE-2025-66378 was published on 2025-12-25 and last updated on 2026-06-17.

References

https://docs.pexip.com/admin/security_bulletins.htm

Affected products (1)

cpe:2.3:a:pexip:pexip_infinity:*:*:*:*:*:*:*:*

More vulnerabilities in Pexip Pexip Infinity

CVE-2020-11805 — Critical (CVSS 9.8): Pexip Reverse Proxy and TURN Server before 6.1.0 has Incorrect UDP Access Control via TURN.
CVE-2015-4719 — Critical (CVSS 9.8): The client API authentication mechanism in Pexip Infinity before 10 allows remote attackers to gain privileges via a…
CVE-2017-6551 — Critical (CVSS 9.8): Pexip Infinity before 14.2 allows remote attackers to cause a denial of service (service restart) or execute arbitrary…
CVE-2025-59683 — High (CVSS 8.2): Pexip Infinity 15.0 through 38.0 before 38.1 has Improper Access Control in the Secure Scheduler for Exchange service,…
CVE-2022-27933 — High (CVSS 8.2): Pexip Infinity before 27.3 allows remote attackers to trigger a software abort via One Touch Join.
CVE-2022-26656 — High (CVSS 8.2): Pexip Infinity before 27.3 allows remote attackers to trigger a software abort, and possibly enumerate usernames, via…

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